int tombol_2;
int tombol_3;
int tombol_4;
int tombol_5;


void setup() {
  // put your setup code here, to run once:
 Serial.begin(115200);

 pinMode(2, INPUT_PULLUP);
 pinMode(3, INPUT_PULLUP);
 pinMode(4, INPUT_PULLUP);
 pinMode(5, INPUT_PULLUP);
 
}

void loop() {
  // put your main code here, to run repeatedly:
  tombol_2 = digitalRead(2);
  tombol_3 = digitalRead(3);
  tombol_4 = digitalRead(4);
  tombol_5 = digitalRead(5);

  if (tombol_2 == 0){
    Serial.println(1);
  } else if (tombol_3 == 0){
    Serial.println(2);
  } else if (tombol_4 == 0){
    Serial.println(3);
  } else if (tombol_5 == 0){
    Serial.println(4);
  } else {
    Serial.println(5);
  }

   
}